Science

Friday, 6 March 2026

Associated with emotions, tears are a product of lacrimal glands, found in the eyes of most terrestrial vertebrates. Although their primary function i ...

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Enceladus

In the equatorial region, the thickness of the Enceladus ice sheet is approximately 35 km.

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Milky Way

The solar system is 27.000 light years away from the center of the Milky Way.

It is located on the inner side of the Orion Arm, one of at least four arms of the galaxy. Their exa ...

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Fungi

A mushroom called Hydnellum peckii growing in North America, Europe and Asia, secretes a red, bloody substance on a white cap.

It is a very rare mushroom, fully protected in Poland, it is placed on the Red List of Large-bearing Mushrooms with status E, i.e. "extinct".The mushroom is inedible but extremely decorative.

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lava

Magma can escape to the Earth's surface in the form of lava as a result of a volcanic eruption or through a fracture in the Earth's crust, both on land and underwater.

Lava is similar in composition to magma, but is depleted of volatile components. It consists mainly of molten oxides of silicon, iron, sodium, potassium, calcium, and other metals.

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Silver

Silver is also used in medicine. Its healing properties were already described by Hippocrates.

Its importance in medicine lies in the use of strong antibacterial properties. Before antibiotics were available, silver compounds were used to prevent infections during World War I.

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Titan

Titan orbits Saturn every 15 days and 22 hours. Rotation around its axis is synchronized with the cycle period.

It travels around the planet at an average speed of 5.57 km/s, approaching it at its periapsis for a distance of 1,186,680 km and distancing at apoapsis for a distance of 1,257,060 km.

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NASA

Apollo 13 launched on April 11th, 1970, and was forced to cancel the landing on the lunar surface (precisely on the Fra Mauro site), because of the explosion of an oxygen tank.

Fortunately, the lunar module served as a lifeboat and returned the crew safely back to Earth.

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Silver

The use of silver is very wide, mainly as a precious metal.

925 silver alloyed with copper is used to make jewelry, dishes and cutlery, medals, and musical inst ...

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Graphene

Although graphene consists of an element that is abundant on Earth, its production costs are high.

This is a major obstacle to graphene finding mass application in many fields. For now, only small amounts are produced.

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Earth

The Earth has the only natural satellite - the Moon.

The moon is relatively large for a natural satellite. Its diameter is approximately ¼ the diameter of the Earth. It orbits the Earth at an average distance of 384.400 km.

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